1. There is a strong positive relationship between the per capita smoking rates and the per capita consumption of alcohol among the individual states in the United States. Which of the following is correct? 0 a. a) There is a strong positive relationship for individuals between their smoking and alcohol consumption rates. Ob. b) This is caused by a lurking variable, the average income of the state. 0 c. c) Both variables can be approximated by a Normal distribution which makes the strong correlation. 0 d. d) The least-squares line will have a positive slope